Apparatus for spraying fluid into tubular members



July 29, 1952 M. c. BROWN 2,504,372

APPARATUS FOR SPRAYING FLUID INTO TUBULAR MEMBERS Filed April 26, 1948 w W W A rrO/P/VEX Patented July 29, 1952 v typeis'pray 501" atomizer;

Asan exim'ple .of'latpraotifiaifapbiiczytiox 91 :the present invention? referencg will be-;mag1 -t9 the :spraying'. "of: the: interiorvqfzsewerr Pip Q inzwatelzf'T-he glazing m te; ."ra r- .isive 1' and :the rayin -fir: aimmim s 151R W spray fluid Tadn" with abrasive material" s 5 as is usually requlrecfin effectlvely brqk'en up 'orl atomlzed general Dbjgt oftl'ie presen lnven- Fig. 1 is a side elevation of the apparatus provided by the present invention, showing it in use in connection with a typical length or section of sewer pipe, part of the pipe being broken away to illustrate the spray head located therein. Fig. 2 is a perspective view of the spray head provided by the present invention with parts broken away to illustrate the interior construction. Fig. 3 is an enlarged longitudinal detailed sectional view taken as indicated by line 3-3 on Fig. 1. Fig. 4 is an enlarged transverse sectional view taken as indicated by line 4-4 on Fig. 1. Fig. 5 is an enlarged detail transverse sectional view taken in the direction indicated by line 5--5 on Fig. 1. Fig. 6 is an enlarged detailed sectional view taken as indicated by line 66 on Fig. 4. Fig. '7 is an enlarged side elevation of the baffle plate of the spray head showing the manner in which it is supported. Fig. 8 is an enlarged detailed sectional view taken as indicated by line 8--8 on Fig. 1. Fig. 9 is an enlarged detailed sectional view taken as indicated by line 99 on Fig. 1, and Fig. 10 is a view similar to Fig. 5, showing a second form of construction.

The spraying apparatus of the present invention may be used to spray various fluids onto various articles. However, it is particularly practical for the spraying of a fluid bearing finely divided vitreous material or glaze and for applying such fluid to the interior of sewer pipe, or the like. In the drawings the work or object worked upon is illustrated as a length of pipe P and it is shown supported in a horizontal position by a suitable support A, the support being n shown as involving a trough-like horizontally disposed rest l0 carried by suitable standards 1 I.

The apparatus involving or embodying the present invention is a manually operable unit and involves, generally, an elongate tubular body B, a handle 0 at the outer end of the body, a spray head D at the inner end of the body, a fluid supply line E delivering fluid to the body, preferably to the outer end portion thereof, control means F for the head D, guide means G supporting the head relative to-the work or pipe 1?, and stop means I-I limiting the extent to which the head may be inserted in the pipe P. The present invention further involves the provision of certain parts of such hardness as to resist. the abrasive action of the fluid being handled, and as a result of providing certain parts of the hardness hereinafter described the structure is rendered practical and economical to use.

The body B is preferably a straight elongate tubular element such as a length of pipe or tubing, and it has its rear end joined to the handle C while its forward end carries the head D. In ,theparticular case illustrated the rear end portion of the body isexternally threaded at l2 for connection with .the'j, handle, while the forward end portion of-the body is internally threaded at l3 to receive the head D. 'In the form of the invention illustrated the handle C involves a sleeve-like part or fitting I4 into which the rear end of the body is threaded, while the head D has an externally threaded rear end portion that is engaged in the threaded part |3 at the forward end of body Ill.

The handle C located at the rear end of body B is shown as involving, generally, a grip iii, a neck portion Hi from which the grip depends and the fitting M which is carried by the neck portion so that it is horizontally disposed and Cal somewhat forward of the upper end portion of the grip. The grip |5 is preferably a pistol type grip so that it is comfortable and convenient to hold. In the case illustrated the handle is a continuous or integral unit having the grip, neck and fitting integrally joined as a single casting, or the like.

The spray head D provided by the present invention involves, generally, a valve 20, a nozzle 2|, baflie means 22 and a bracket 23 supporting the baflie means. The valve is joined to or carried by the forward end of the body B while the nozzle 2| is joined to and carried by the forward end of the valve 20. The bracket 23 is carried by or mounted on the structure formed by the valve and nozzle, and it supports the bafiie means 22 in the path of the stream of fluid delivered by the nozzle.

In the form of the invention illustrated the valve 20 involves, generally, a tubular case X, a seat Y carried in the case, and a valve member Z cooperating with the seat.

The case X of the valve is an elongate tubular part with an inlet end portion 25 joined to body B and with an outlet end portion 26 extending forward and carrying the nozzle 2|. The outlet portion 26 is considerably smaller in diameter than the inlet portion 25 through which construction an internal rearwardly facing shoulder '21 is established in the case, as clearly shown in Fig. 2 of the drawings. The rear end portion of the valve case is threaded and engaged in the forward end of body B, while the forward end portion of the case is externally threaded and receives the bracket 23 and also the nozzle 2|.

The seat Y is a simple tubular part snugly engaged in the inlet portion 25 of the case to rest or bear upon the seat 2'1. The seat has a straight round or turned exterior 30 having a press fit in the opening of the case portion 25. The ends of the seat are flat and the inner end rests upon or engages the shoulder 21. The seat has a central bore or opening extending through it, the rear end portion 30 of the open- 1 ing through the seat being enlarged somewhat and tapered to properly cooperate with the valve Z.

The valve Z is a simple elongate centrally disposed part with its forward end portion or tip tapered to have cooperative engagement with the tapered opening 3| of the seat. When the valve Z is forward it seats in the opening 31 closing the passage through the seat. As the valve is withdrawn or moved rearwardly flow is permitted through the seat and through this construction the rate of flow can be accurately governed.

The nozzle 2| in the form of the invention illustrated involves a cap 33 and a;tip or orifice member 34 carried by the cap. The cap 33 is joined to the forward endof the valve case being threaded onto the forward threaded portion 35 of the case portion 26." The cap'j is a simple part with a center bore oropening3lformed through it.

The tip or orifice member 3115 a simple bushing-like part tight in the cap 33, being tightly seated in the bore 31 of the cap. The tip has an enlarged part or flange 4|lat its forward end seating against the forward end of the cap and the outer forward corner 4| of the flange is beveled away, as clearly shown in Fig. 2 of the drawings. The tip has a flow passage 44 entering it from its rear end and it has a reduced or jet opening 45 communicating with the opening 44 aemgsm aiitotal absencehff tortuous nassa'g'egduet g or e firdueh:whichrthe' nuiai-hiust passiand which areTcharacteristie of f dr'dma'ry' ia'tomi'zin'g headsht a m r .Thetbaiile 1*.

having a- *flat front-facet t 50 i and. "a; 'beveledlifir receding peripheral 'tedgeii'lx ti Thep-lateis prefer.- ablyi'round or, 'disc-shapediand" th'e face. 59:11:" the-plate :is flat and" smqoth 5 The-rbraqkqt 5'23 supports :the battle 'platerrin line mth thengzzle 017 so that" the; stream issuing vfromj the nqzzle impinges -upon the, -c'ente1t '91 "the" plate-and; the p ate; is. upp r e t t; thep n o i s: ace 50;is normal ;to the axis of the nozzle or of -the s eam: s i r m t e n z lhe e h l, ed e r p r on 1: i he bi e is an important featureof the present invention. h d p ti n "i b vel q P h $9. th i ec desw r rom; h f =59--= hai-ac .50 and-thereeeding edge 5 tdeflneasharp periph 1 eraledge 52; Ion the; plate from; which theinatetial i nping-ing upon the-plate issues radiallyg 'lfhe radial fi0w--from the edge 52causesair-to--be tsiraw l ne nethe cedi rpe t e gewith the result a that the air is pieked pr entrained in the g radial flew} and s eryes to i e ee y i' ato ize th JiQ ds t i i is r, td lith d enn i 1'1" J'f {The bracket 23 is shew-n as'includingaeoHar and an outwardly bewed arniBS; whiqh carried by the collar. and extends laterally and'forward'u'and then transversely .of the axis ofthe hea'd;tb.s1'1pport the 'baflle plate forward o'f the nozzle, vand inthe manner hereinabove described. T Inl practice the bailieplatem'af ibe mounted on thelo'uter end of arm 56in any desired manner. the .case illustrated the ariri .56 iss'hown providedflwith an" enlargement 0 1* head 58 with a" threadedopening receiving a threaded Lshank 53 projecting from the bafiie' plate? The fbaiiie Tplate, is fixed or permanently 'se'curedt-o' the forward endo'f the shank as by Welding,- brazing or other suitable means. fBy rotating th'e shank in the head. 58. the: space :b etwee'n the nozzle v and baifier'plate' may be dj A lock n 6. i rca rried on the'shank 59 to be tightened against the head 5-8 for fittingthe' plate in the: desired Tadiusted hosi ion-w .i' I 4 1 In the form of "the invention shown in- Figs. -1 "t Q the-arm 55 is round in crossseetion, being Tigrrned efja bar or length oi tool steel; or the ike-"g n p d cate -t s a i s s ra ia from .thegbafile pla'te'it must pass the arm '56 i e qre te ch n thesurt t to be r y d-j .I .i rect e' VI \m nem loy; an rms 5 t hieh' streamlined in cross section; as shown in Fig 1Q,

i oft e e aim ha am i e bimeoi t 'F i i Llfi- W. he time t a h; the ma e fhei es ayed; 3 1

- The-supply iin'ehi'sfnreferably jhmea' to- "the freaif end'pbrticm of bedy B and in practi'c'e it may the b25651 immediately-ahead er the iittingil' t,

asclearl'y shbv'm in Fi'g23 of the drawings;

' Th'e term-01"- means E is "sh'own -"as invdlving,

-Dreieried' arrangement the trigger lis' pivotally fearified by the handleC and-the stein H extends leng'itudihally threughjthe bedy B. fi he trig g'el' is shown pivoted to; the'heekrprtioh 1' og-the Handle and depends thi'e'fro'In ih'imediatelyfdif ward of the grip I5 to he in position-tdbe'gp'n- "veni'ently Operated by a'fingehbfa hand grasping the grip." n the 'partieular cehstruptio iuhsti' ated the'thigger has aiyok'edilfiper end pqrtioh having-sid11319133512-'tvhich straddle 'r embrace t e l we'r edg pe'rtion of the heck I 6 to which t ey'are-hhnh etea t e: su table pivbt" p n 1n The stein- 7 is bieierably anintegral rearward "extehsioh eheehtihuatihh er t e v'alve zf being -20 aro'd like p that extehes ea ardlyt ough ljod y B be}; issiiert ererrom through thegfitti -rd.

In {the pase' illulstratd the sten i ijs Sh OW'n" passing MI AIi 'hIaigeti part 61' shank pdrt io'nfifi yided on therear end of the stem. that-1s 'ar t eof the fitting I t n hi1" shank p'ei tie 1 s e1on'gatearmi'83 projecting forward frdmitiieirear of the structure, and a contaet memhe'r stfisup ported "by" the farm laterally. titemovedl"froint"the headfD' andxenga'gehblewith guide part s'uehzras :the iexteriorfrfi fifof the Ipipei B; In" the; case; illusttrated'thearmfi is :eon'nected with or carried by "the neck'i It; 'ofithe; handleic :and iprojetsfoiwar'dlyjtherefrorh t'oribe parallel. with "andflatr- "ally'bifsetifmmthe body B. al'lherarm:Ba isyprei erahly tubular; s that :itjis t fi jli l fl 130 1 91 1. i .7" 5 h r -:T. con ac ;e eme t 84 erab y :and i shqwns eqtted romrthe ermfli-teh ,a hanger having atcolla'i 86hcarriedon thelarm and depending, side plates .81: betweerif whiel h the jelleh is larraifigdL "AI-0116f shaft 88. tiitehdsl 9::- tW'ee ihe [side plates. i -End. ro atablyiisllpiiorts 1th 1m11e i "the spam-t t l r liai e l u's I l g h P a es? -gha jv rtiea y disp sed. l s or hide;- eyeifi i i em ip r gt pQlftions of the shal -hand clamp nu s90 are eafriednnt the. hcfrti'on b f thefshaitftd be tightened aeitinst' the 'g'iiififlfidS foi the' platesgja hrtughit is' ethsti 'fitibn the roner eaa he readily aeiu'st a i er the hangeriias ci-reums't'ahes fnay rez e hthhhs rearwardly fro'fn thehese "and .impinges upon thebaiile plate,

The collar 86 is slidable lengthwise of the arm 83 so that the. roller can be adjusted to any desired position above the body B. In the case illustrated the collar 86 is a split collar adapted to be clamped onto the arm by a clamp screw 9|. In the preferred arrangement of parts the hanger is located lengthwise of the arm 83 so that the roller 84 is supported in the vicinity of the head D and is laterally offset from the head, so that the head is supported concentrically in the pipe P.

The stop means H is intended to limit the extent to which the head can be inserted in the pipe P. In the case illustrated the stop means involves a split sleeve 93 slida-bly carried on the arm 83 to be set against movement along the arm by means of a clamp screw 94. A stop plate 95 depends from the sleeve 93 and has an opening 96 passing the .body. It will be apparent that the I stop plate can be set in any desired position lengthwise of the body and in practice it is set so that it engages the end of pipe P through which the head is inserted to stop the head in the desired position at the other end portion of the pipe.

The fluid ordinarily applied to the interior of a pipe P is made up of water carrying glaze which is finely divided vitreous or fusible material and is ordinarily highly abrasive. Through the present invention the head D that handles the fluid carrying the abrasive material is such as to have but three parts subject to wear or to being cut out by the fluid, these being the seat Y, the tip 34 and the baffle plate supported by the bracket 23. In accordance with the present invention these particular parts are made of a material harder than the abrasive material carried in the fluid, it being preferred in practice to form them of tungsten carbide, or the like. It is significant to note that these particular parts are all of very simple form or design, making it possible to manufacture them economically of exceedingly hard material, such as tungsten carbide. Further, in carrying out the invention it is desirable that the various other parts of the head, and particularly the bracket arm 56, be formed of hard material such as hard or hardened steel so that the abrasive material handled does not cause excessive wear. In practice it has been found desirable to form the bracket arm 56 of hardened tool steel.

From the foregoing description it will be apparent how th apparatus of the present invention can be operated or handled with reference to .a pipe P and it. is to be observed that the flow of fluid is controlled at the head or by means of the valve in the head from the control means, the trigger of which is remote from the valve of the head. The operator grasping the grip of the handle can readily depress or operate the trigger causing the valve of=th head to open, whereupon the material under pressure supplied to the hose 6| flows" through'jtlgeib'ody and is discharged from' thehead issuing in a solid stream from the'tip of the noz which stream that the fluid is spread radiallyi'n all directions and with the result that air is drawn into the radially dispersed liquid, causing atomization or dispersion, to the end that the material is uniformly. and most effectively distributed onto the interior surface of the pipe. By moving the head through the pipe either into the pipe or from the pipe, as the material is sprayed by the head, the entire interior of the pipe may be coated in the desired manner.

Havingdescribed only a typical preferred form and application of my invention, I do not wish to be limited or restricted to the specific details herein set, forth, but wish to reserve to myself anylvariations or modifications that may appear to those-skilled in the art and fall within the scope of the following claims:

Having described my invention, I claim:

1. Apparatus for spraying fluid into a tubular member including, an elongate tubular body to be inserted in said member, a spray head on the forward end of the body including a valve, a nozzle and a baffle plate forward of the nozzle, a fluid supply line connected with the rear end portion of the body, a handle at the rear end of the body carrying the body, a control including a trigger carried by the handle and a stem operated by the trigger and actuating the valve, a guide carried by the handle including an arm extending forward from the handle above and parallel with thebody to overlie said member and a contact roller carried by the forward end portion of the arm to contact the exterior of said member, and stop means limiting insertion of the body into said member.

2. Apparatus for spraying fluid into a tubular member including, an elongate tubular body to be inserted in said member, a nozzle at the forward end of the body to direct a stream of fluid forward from the body, fluid supply means delivering fluid for the nozzle, a manually operated valve for controlling flow of fluid through the nozzle, a handle at the rear end of thebody and a guide carried by the handle including an arm extending forward from the handle above and parallel with the body to overlie said member and a contact roller carriedby the forward end portion of the arm to contact the exterior of said member.

3.. A sprayer of the. character described for cooperation with work having faces at opposite sides thereof including, an elongate body, a handie on one end of the body, a spray means on the other end of the body, and guide means attached to the handle at a point spaced from the body and projecting from the handle in spaced relation to the body and substantially parallel therewith and having a work engaging part engageable with one face of the work while supporting the body with the spraymeans directing fluid to the other face of the work.

4. A sprayer for applying'fluid to the interior of an open ended tubular object including, an elongate body insertable in the object from one end to have an inner end within the object and an outer end at the exterior of the object, an elongate guide element laterally removed from the body and substantially parallel and coextensive therewith, a member extending between and spacing one end of the guide element and outer end portion of the body, said member rigidly connecting the body and guide element at the exterior of the object, a part on the other end of the guide element engageable with and movable along the exterior of the object, and fluid spraying means on the inner end portion of the body for directing fluid into the interior of the object.

5. A sprayer for applying fluid to the interior of an open ended tubular object including, an elongate tubular body insertable in the object from one end to have an inner end within the object and an outer end at the exterior of the object, an elongate guide element laterally removed from the body and substantially parallel and coextensive therewith, means coupling one end of the guide element and outer end portion of the body together at the exterior of the object, a roller on the other end of the guide element engageable with and movable along the exterior of the object, a spray nozzle on the inner end of the body for spraying fluid onto the interior of the object, means supplying fluid to the outer end portion of the body, a valve for controlling flow of fluid to the nozzle, a handle at the outer end of the body, and operating means for the valve including a manually operated element adjacent the handle.

6. A sprayer for applying fluid to the interior of an open ended tubular object including, an elongate tubular body insertable in the object from one end to have an inner end within the object and an outer end at the exterior of the object, an elongate guide element laterally removed from the body and substantially parallel and coextensive therewith, means coupling one end of the guide element and outer end portion of the body together at the exterior of the object, a roller on the other end of the guide element engageable with and movable along the exterior of the object, a spray nozzle on the inner end of the body for directing a, stream of fluid from the inner end of the body, a baffle plate spaced from the nozzle in the path of such stream directing fluid onto the in terior of the object, means supplying fluid to the outer end portion of the body, a valve for controlling flow of fluid to the nozzle, a handle at the outer end of the body, and operating means for the valve including a manually operated element adjacent the handle.

7. A sprayer for applying material to the interior of an open ended tubular object including, an elongate body with a forward end portion insertable into the object from one end thereof, an

10 elongated guide adapted to extend parallel with the body and spaced laterally therefrom, the guides being engageable with the exterior of the object, a handle at the rearend of the body to occur at the exterior of the object, the handle supporting the guide at a point spaced from the body, means supplying fluid to the body, a head on the forward end of the body including, a valve for receiving fluid from the body, a nozzle to receive fluid through the valve and to deliver a stream of fluid forward from the body, a baffle plate, and a bracket supporting the plate in the path of such stream to direct fluid laterally of the stream, and means controlling the valve of the head, the valve including a tubular case connected to the forward end of the body, a seat in the case and a needle member cooperating with the seat, and the nozzle including a cap on the forward end of the case and an orifice member carried by the cap, and the bracket including a sleeve carried by the case and an outwardly bowed arm carried by the sleeve and projecting forward therefrom.

MEREDITH C. BROWN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 654,132 Bush July 24, 1900 1,758,810 Austin et al May 13, 1930 1,921,231 Jourdan Aug. 8, 1933 1,926,651 Rombach Sept. 12, 1933 1,960,725 Bramsen et al May 29, 1934 1,980,464 Yedd Nov. 13, 1934 2,344,905 Short Mar. 21, 1944 2,451,071 Cline Oct. 12, 1948 2,461,517 Carnevale Feb. 15, 1949 2,489,952 Boudreaux et al. Nov. 29, 1949 2,520,397 Green Aug, 29, 1950 

